摘要:
An electric power storage device with multiple voltage outputs capable of providing electricity of various voltages for different electronic devices. The device includes a first switch and a second switch that connect to the electronic device; a voltage level-adjusting unit used to output a setting signal of a selected voltage level; a processing unit connecting to the first and second switches and the voltage level-adjusting unit to receive DC electricity and the setting signal to switch on/off the first switch and the second switch after some comparisons and operations; a charging circuit using DC electricity to charge a battery unit; and a voltage transformer connecting respectively to the processing unit, the battery unit, and the second switch to transform electricity obtained from the battery unit under a control of the processing unit and provide the transformed electricity for the electronic device via the second switch.
摘要:
A PCI-based interfacing device with mappable port addresses to legacy I/O port addresses has an addressing circuit, a PCI controller connected to the addressing circuit and a PCI port, and an equipment controller connected to the PCI controller and an equipment port. The addressing circuit sets up a legacy I/O port address. The PCI controller transmit and receive data packets having data and one of the set of legacy I/O port addresses encapsulated therein to be processed to and from the PCI port, and output the received data packets to the equipment controller. The equipment controller converts the data packets into equipment data corresponding to the equipment port, and transmits the equipment data to the equipment port. Accordingly, the PCI-based interfacing device can perform data communication with legacy I/O port addresses.
摘要:
The invention provides a lateral double-diffused metal oxide semiconductor (LDMOS). The pre-metal dielectric layer (PMD) of the LDMOS is a silicon rich content material. Additionally, the inter-layer dielectric layer (ILD), inter-metal dielectric layer (IMD), or protective layer of the LDMOS may be formed of a silicon rich content material.
摘要:
A temperature detector and a projector using the temperature detector are provided. The temperature detector is configured to judge the operating temperature of the lamp in the projector. The temperature detector includes a charging/discharging circuit and a temperature judgment unit. The charging/discharging circuit receives a system voltage and provides a temperature voltage. The temperature judgment unit receives the temperature voltage and judges whether or not the operating temperature of the lamp falls in a first temperature range according to the temperature voltage so as to correspondingly output a temperature judgment signal. The scheme of using the temperature detector can determine a heat-dissipation time required by the lamp to advance the accomplishment rate of re-lighting and avoid affecting the lifetime of the lamp due to frequent lighting operation.
摘要:
A motor housing has a heat-dissipating casing having an outer casing and an inner casing. The outer casing is tubular and has an inner surface. The inner casing is tubular, is co-axially mounted in the outer casing and has multiple fins and multiple baffle ribs. The fins are formed on and protrude radially from an outer surface of the inner casing. The baffle ribs are formed on and protrude radially from the outer surface of the inner casing and are connected to the inner surface of the outer casing to form multiple air passages between the inner surface of the outer casing and the outer surface of the inner casing. Each baffle rib has two ends and a front threaded hole and a rear threaded hole defined respectively in the ends of the baffle rib.
摘要:
A serial port connector with power output function includes a serial port having a plurality of pins. Under the existing EIA-RS-232, EIA-RS-422, and EIA-RS-485 standards for connectors, the definition of the pins of the serial port are altered, so that a pin that was originally defined as floating or for serial data communication signal is now changed to a power output specification. Thus, when the connector is connected via the same one cable to a serial port peripheral device, the connector can provide both functions of serial data communication signal transmission and power transmission to thereby largely increase the usability of the connector.
摘要:
A liquid cooled motor assembly and a cover thereof The cover of the liquid cooled motor assembly has an outer cylinder, an inner cylinder, a channel and multiple fins. The inner cylinder is mounted in and connected securely with the outer cylinder. The channel is zigzag and is formed between the inner cylinder and the outer cylinder. The fins are mounted securely on an outer surface of the inner cylinder. With the fins mounted on the outer surface of the inner cylinder, water can dissipate heat from the fins quickly and a dissipating efficiency is enhanced.
摘要:
The improved plumb-bob is mainly consisted of a body section, a point section, and a fixing element, wherein a connecting means is arranged at the top of the body section by which it may be connected to a suspending cord, and the point section is a cylinder with a flange arranged at the shank, and the point section is provided at least at one end with a conical-pointed part, and the fixing element is bored from the low end to the upper end forming an upper portion and a lower portion. The upper portion is of larger diameter and the lower portion is of reduced diameter but is larger than that of the point section, thus forming an angular shoulder against which the fringe abuts when the parts are assembled to enable the conical-pointed part to project outwardly under the fixing element. The fixing element can hold and fix the point section in a proper position between the body and the fixing element. The invention may simplify the structure of the expandable point section such that not only the manufacturing cost of the point section is reduced, but also many unnecessary compatible constraints may be removed, that is, when the point section is damaged and no spared point section for replacement, a metal nail, such as iron nail, steel nail, etc., with similar diameter can be applied as a substitute.
摘要:
A Hall-Effect measure apparatus comprises a magnetic source, a wafer on a thermal chuck, a dc current source and a voltage meter. The magnetic source generates a magnetic field in a perpendicular position relative to the wafer. Furthermore, the magnetic field is targeted at a specific region of the wafer to be tested. By performing a Hall-Effect measurement and van der Pauw measurement, the carrier mobility of the specific region of the wafer can be calculated.